add error check log for lmdb engine #166
add error check log for lmdb engine #166

bssrdf/ardb,bssrdf/ardb,placrosse/ardb,yinqiwen/ardb,yinqiwen/ardb,lsm/ardb,lsm/ardb,tempbottle/ardb,wfxiang08/ardb,cloudrain21/ardb,cloudrain21/ardb,spitfire2/ardb,wfxiang08/ardb,tempbottle/ardb,placrosse/ardb,spitfire2/ardb